/*
* INSANE - Interactive Structural Analysis Environment
*
* Copyright (C) 2003-2005
* Universidade Federal de Minas Gerais
* Escola de Engenharia
* Departamento de Engenharia de Estruturas
* 
* Author's email :    insane@dees.ufmg.br
* Author's website :  http://www.dees.ufmg.br/insane
* 
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
* 
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
* 
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
package br.ufmg.dees.insane.model.disc.shape;

import br.ufmg.dees.insane.model.disc.element.FrameElement;
import br.ufmg.dees.insane.util.IMatrix;
import br.ufmg.dees.insane.util.IVector;


/**
*A class representing shape functions for tri-dimensional problems.
*
*@author Lucas, Marcelo & Pitangueira, Roque
*@version 1.0
*@since May 2004
*/

public abstract class Shape3D extends Shape
{
	/** Returns the IVector containing the values of shape function evalueted in provided points.
	*@param g The array containing the coordinates which the shape function will be evalueted.
	*@return The IVector containing the values of shape function evalueted in provided points.
	*/
	public abstract IVector getShapeFunction(double[] g);
	
	/** Returns the IMatrix containing the values of shape function derived and evalueted in provided points.
	*@param g The array containing the coordinates which the shape function will be evalueted.
	*@return The IMatrix containing the values of shape function derived in and evalueted in provided points.
	*/
	public abstract IMatrix getDerivedShapeFunction(double[] g);
	
	/** Return the IMatrix containing nodal coordinates of this shape in natural system.
	*@return natCoords The IMatrix with nodal coordinates of this shape in natural system.
	*/
	public abstract IMatrix getNaturalNodalCoords();
	
	public IVector getShapeFunction(FrameElement elm, double a) {return null;}
	
	public IVector getDerivedShapeFunction(FrameElement elm, double a){return null;}
}
